Abstract: An automatic tire gauge for indicating levels of air pressure within a tire. The inventive device includes a cylindrical housing having a closed upper end an open lower end. The open lower end is internally threaded for mating with external threads on a standard tire valve stem. An outer portion of the cylindrical housing is transparent. A mounting bracket is disposed inwardly of the open lower end of the cylindrical housing. The mounting bracket has a protrusion extending downwardly therefrom for contacting a valve needle of the standard tire valve stem. A calibrated spring is secured to and extends upwardly from the mounting bracket. The spring has a calibrated tension corresponding to a specific tire pressure. A pressure indicator is secured to an upper free end of the calibrated spring. The pressure indicator comprises a cylindrical member disposed interiorly of the cylindrical housing. The cylindrical member has pressure indicating indicia thereon.